— 67 



Imports into 



1906 



1907 



37 243 



26 709 



64 070 



65 906 



j 1,72 



2,47 



4 522 



6 422 



8 499 



10 449 



| t,88- : 



1,63 



3 873 



2 394 



7 500 



4 292 



) 1,94 



1,75 



1903 



1909 



1910 



United Kingdom 



Hamburg 



Austria-Hungary . 



Cwt. ...... 



Value . . . , £ 

 Average price 

 per cwt. . . £ 



Cwt. ....... 



Value . . . . £ 



Average price 

 per cwt. . . £ 



Cwt. . , 



Value . . . . £ 

 Average price 

 per cwt. . . £ 



38 612 

 88 772 



2,3 



12 748 



20 651 



1,61 



4 228 

 10 333 



2,44 



40 923 

 90 702 



2,22 



10 583 



20 842 



1,97 



3122 

 7 792 



2,5 



42 939 

 100 771 



11883 

 25 539 



2,15 



3 635 

 9 853 



2,71 



Gingergrass Oil. The demand for this oil has been very slack 

 indeed, and it is therefore not surprising that at the coming of the new 

 crop considerable quantities are left over from 1911, of which the cost- 

 prices are very cheap. It will therefore be necessary for the producers 

 in India, if they want to find any buyers for the article at all, to be very 

 moderate in their demands. During the summer the prices have remained 

 unchanged. 



t 



An instance of laevorotation observed in gingergrass oil has given 

 occasion to W. H. Simmons 1 ), to call attention to this alleged anomaly, 

 which, he believed, had never before- been observed. The oil in question, 

 of which the properties otherwise were normal, had a rotation to the left 

 of 21°, and, when more closely examined, proved to be unadulterated. 



To this we may remark that in the course of years we have repeatedly 

 handled lsevorotatory gingergrass oils of guaranteed purity. Two such 

 oils, with rotation — 19° 12' and — 27°15 r respectively have been referred 

 to in a previous Report (April 1010, 85). As the author in his article 

 inter alia appealed to our Reports we have availed ourselves of the 

 opportunity to write to Mr. Simmons, calling his attention to these 

 lasvorotatory gingergrass oils described by us, and were informed that 

 these references had escaped his attention because they appeared under 

 the heading of "palmarosa oil". 



It may be a matter of interest to many readers if we take this occasion 

 to place on record the limits of value which, up to the present, have 

 been observed by us in gingergrass oil: d i5 o 0,90 to 0,953, « D + 54 to 

 - 30°, n D20 o 1,478 to 1,493, acid v. up to 6,2, ester v. 8 to 29, ester v. after 

 acetyl. 120 to 200. The oils are often soluble in as little as from 2 to 



x ) Perfum. and Essent. Oil Record 3 (1912), 108. 



5* 



